Rotating table for drilling-machines and the like



W. M. ZIEGLER AHB A. G'. SUDHOFF. `TTOTATTT TABLT FOR DRI'LLTN MACHINES AND THE mm2.

Patented Feb. 8, 1921.

3 SHEETS-SHEET l.

nld TT .ZIEGLER AND -A. G. SUDHOFF.

ROTARY TABLE FOR DRILLING MACHINES AND THE LIKE.

APPLICATION FILED MAR. 10. |920.

Patented Feb. 8, 1921-.

3 SHEETS-SHEET 2.

W.'M. ZEGLER AND A. G. SUDHFF. ROTARY TABLE FOR DRlLUNG MACHINES AND THE LIKE. APPLicATioN FILED MAH, no. 1920.

1,367,579. Patented Feb. 8,1921.

UNITED STATES PLIENT OFFICE.

WILLIAM M. ziEGLna AND ALFRED G. sUDHorr, or RICHMOND, INDIANA, AssIGNoRs To THE NATIONAL AUTOMATIC TooL Co., or RICHMOND, INDIANA, A CoItronA- TION OF INDIANA.

ROTATING TABLE FOR DRILLING-MACHINES ANI) THE LIKE. y

Application led March 1 0, 1920.

To all whom it may concern.'

Be it known that we, VILLIAM M. ZIEG- Lnn and ALFRED Gr. SUDHOFF, citizens of the United States, residing in Richmond, in the county of Wayne and State of Indiana, have invented Certain new and useful Improvements in Rotating Tables forv Drilling- Machines and the like, of which the following is a specification.

The object of the present invention is to more adequately provide for' disposal of lubricant and chips than has heretofore been done, in machines employing rotary work-tables, such for example as a multiple drill. An example of a machine of the general character of that in connection with which this present invention has been developed may be seen in the Stephenson Patent No. 1,012,024 issued December 19, 1911, though that patent does /not exhibit a rotary Work-table. Machines containing the Stephenson invention have been quite extensively used which do have a rotary work-table, and in many uses of such a machine, and particularly in drill practice as carried on in some manufacturing establishments, lubricant is used very copiously with the result that in rotation of the worktable it is apt to be thrown oif to the discomfort of the workman and to the detri-l ment of his operations and also resulting in material loss as to recovery of lubricant. In some instances drain-holes have been provided Screened to catch the chips but this custom has been attended with more or less inconvenience and diiiculty in the matter of removal of the chips, besides which their accumulation interferes with the ready-flowing oif of the lubricant.

By the present invention provision is made for free andcontinuous iiow of both lubricant and. chips and their ready disposal without any chance of lubricant'being thrown oif the table. In carrying out the present invention in the form here shown large openings are formed in' the inner wall of the usual encircling oil gutter and passages lead from these openings inwardly and dischar e into other passages in the base upon which the table is mounted, whence the lubricant, carrying the chips along with it, Hows to the.subbase where it Specification of Letters Patent.

Patented Feb. 8, 1921.

Serial No. 364,810.

can collect in a suitable -space provided .for the purpose and from which it can be removed, tlie chips being scooped out as occasion may arise.

In the drawings which accompany and form partof this speciiication, Figure 1 represents 1n perspective a table, base and subbase;.F ig. 2 is a vertical cross-section taken substantially on the line 2 2 of Fig. 1 g. Fig. '3 is a bottom plan view of the table; Fig. is a fragmentary section taken substantially. on the line Le-4 of Fig. 3; Fig. 5 is a top plan view of the base; Fig. 6 is a vertical section taken substantially on the l1ne 6-6 of Fig. 5, and Fig. 7 is a vertical section taken substantially on ythe line 7--7 of Fig. 5.

The numeral 2 designates in general the sub-base which rests upon the lfloor, 3 the basey proper which is mounted upon said sub-base, and -1 the rotating table; The latter is of circular form and has the usual encircling oil gutter'. Large openings 6 are made in the inner wallof this gutter at frequent intervals and radial passageways 7 extend inwardly from these openings. One lof these passageways appears clearly in Figs. 2 and 4 and will be seen to be closed all around for some distance toward the center of the table. It leads to a fairly `wide space between webs 48 of the table casting, which space is fully open at the bottom roviding a spacious outlet'7a for oil and ciiips iiowing down the passageway 7, the bottom of the latter being inclined downwardly toward `the center of the table as clearly shown in Fig. 2. By reference to Fig.l 3 it will be seen that 'an ample number of these oil passageways and discharge openings @is provided, six being there shown as alternating between webbed sections of the table casting.

The table is mounted `to turn upon the base 3 which at its upper part is of circular form, the lower part being of rectangular forni. This base is cast with a number of radiating webs 9 and it is fully open at the top between these webs in such manner as to re ister with the large discharge openin s 2. The spaces 10 in the base casting between the' webs provide large passagewaysv a of the table, as clearly shownin for the oil and chips discharged through said table openings, the bottoms of these large passageways are inclined vso as to carry the oil and chips outwardly for their discharge upon the sub-base 2/ which is hollow and thus serves as a reservoir for the oil and chips. lt may be rendered suii'i ciently open ab'ove in. any suitable manner to give access for recovery of the oil and removal of the chips. Atene side of the base 3 certain table controlling mechanism is mounted comprising a treadle ll and operating connections for elevating the table, and a lever l2 and suitable connections for `coperating table indexing means to fix the position of the table. This mechanism forms no part of the present invention, and is shown and here mentioned merely bef cause its presence occasions a somewhat different formation of the base at this side thereof from its formation elsewhere for the disposal of the oil and chips flowing down from the table passageways. At the other three sides of the base the passageways simply extend down and outwardly between the webs 9 as shown in lligs. 5 and ,6; 13 designating their sharply sloping bottoms. ling mechanism is located the space required to accommodate that mechanism eliminates oneweb. lrlere the oil receivin o eninfr C! is double the width of other such openings and the passageway, instead of having a dat outward-sloping bottomlilre the other passageways, has a divided character, the bottom surface sloping in opposite direction and at right angles to what the slope would be if this passageway was just like the others. rllhis is best illustrated inlFig. 7

where the numeral la designates the oppe' sitely sloping surfaces. There isa .somewhat diii'erent conformation in cross-section atright angles tothis figure of the,

drawings, v as compared with other parts of the base, which difference in conformation is also occasioned by the necessity for accommodating the table controlling mechanism before mentioned. lllhs appears quite clearly in l" ig. 2 at l5, as a bowllilre formation with end walls formed by. webs 9. See also lllig. 5. lutlet openings le are made in these webs for theI escape of oil flowing down the oppositely ksloping surfaces le, which discharges upon the subjacent surfaces i3.

A lt will be noted that the openings in the inner wall ofthe oil gutter encircling the table are of ample proportions, so much so as to providev for ready dow of oil and chips through them. lilo screens are used over them and there is 'no opportunty for oil and chips to accumulate in the grtter and so far fill the same as to result in overflow, land there is no opportunity for oil to be th; odthe table as the-latter is rotated.

At the side where the table-control-k isomers llt has already been mentioned that these large openings occurrat frequent intervals, and it will be obvious that the character of -the passageways 7 is such as to provide for sageways of the base, and the latter are of such character as to provide for immediate discharge of the oil and chips unto the subbase. llt willbe obvious therefore that the rotating table and the base are hept free at all times from accumulation of chips and that there can be no choking of oil dow or any escape of oil except by way of the passageways which lead it to the reservoir in the sub-base, so that complete recovery of lubricant is made possible.

lt will now be apparent that the structure shown and described is well adapted to thoroughly fulfil the object primarily stated, but at the same time it is of course to bel understood that the form of embodiment of the invention here detailed has been worked out in connection with one particular use and there maybe various more or less differing adaptations of the invention to other situations.

l. The combination of a rotary worin table having an encircling channel and subjacent inwardly extending drain passages, and a stationary base having passageways registering with outlets of the said drain passages at the inner `ends thereof.

2. The combination of a rotary worlr table having an encircling channel and' subjacent inwardly extending radiating drain passages communicating their outer ends with said channel and having discharge openings in their under sides at their inner ends; and a stationary base having downwardly and outwardly directed passageways registering with the said discharge openings or the ,drain passages.

3., The combination of a rotary work table having an encircling channel and radiating webs on its under side with oil passageways between webs and closed around for a distance inward, the space beyond between the webs being open; and a stationary base on which the table turns, said base having rato register with those between webs of the table, and discharge passageways leading "from open spaces downwardly and outwardlyu u,

fi, The combination of a rotary worlr table having an .encircling channel andradiating webs on its underside with oil passageways .dieting webs and open spaces between them between webs and Closed around for a distance inward` the space beyond between the webs being open: and a stationary base on which the table turns, said base having radiating webs and open `Spaces between them t0 register with those between Webs of the table. and discharge passageways leadintgfrom open spaces downwardly and outwardly, one such passageway dividingl and extending in opposite direction to open- 10 ings in opposite sides of the base.

WVILLIAM M. ZIEGLER. ALFRED G. SUDHOFP 

